Study on shear performance of multiple-bolt joints of Bamboo curtain plywood

In this paper, five sets of multi-bolted joint shear tests are designed to study the effect bolt middle distance on bearing performance joints, and analyze failure modes specimens. The main conclusions as follows: For M10 bolts (grade 8.8) bamboo curtain plywood connections. When spacing increases 50mm, ultimate capacity nodes tends be stable; initial stiffness joint, has no obvious joint. However, increase in number significantly joint; nodal yield load, load with distance, is 67%~73% capacity; mode multiple-bolt double specimen that test piece first reaches its pin groove strength fails, mainly include breakout hole wall failure.